import java.util.Scanner;
import java.util.ArrayList;
class Student{
    String au;
    String ma;
    public Student(String a,String m){
        this.au = a;
        this.ma = m;
    }
    public String toString(){
        return au+ma;
    }
}
public class Test {
    public static void main(String args[]){
        ArrayList<Student> list = new ArrayList<Student>();
        Scanner input = new Scanner(System.in);
        Student s1 = new Student("12122","12122");
        Student s2 = new Student("13133","13133");
        int n = input.nextInt();
        switch(n){
            case 1:
                list.add(s1);
                break;
            case 2:
                list.add(s2);
                break;
            case 11:
                list.remove(s1);
                break;
            case 22:
                list.remove(s2);
                break;
            default:
                System.out.println("输入错误！");
                break;
        }
        for(int i = 0;i<list.size();i++) {
            System.out.println(list.get(i));
        }
    }
}
